Argh. While I'm glad to know it's not just me, your situation sounds bad. Maybe 
it will be fixed in 6.4, coming soon.

Steve

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Neil Schofield
Sent: Thursday, October 11, 2012 2:20 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM4VE and Summary Table

Steve

Yes, we've noticed the same and it's a right pain.

The TSM for VE incremental backup processing need to read the CTL files stored 
during previous backups. We store these on primary disk on the TSM server and 
back them up to copy storage pools on tape (not collocated).
The VM proxy servers are running LAN-free and instead of the proxy server 
reading this data off the disk copy, it mounts the tapes from the copy storage 
pool.

This has all sorts of horrible side effects:
- it slows down the TSM for VE backup while waiting for the tape mount
- concurrent TSM for VE backups are contending for the same cartridge
- during periods of tape drive contention, because the restore of the CTL files 
is a higher priority operation it can pre-empt other backups

I've had a PMR open on the issue for over 12 weeks now, but am struggling to 
make any head way.

Regards
Neil Schofield
Technical Leader
Yorkshire Water

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